<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
        <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="3">
          <el-button type="primary" @click="addDialogVisible =true">添加用户</el-button>
        </el-col>
      </el-row>

    <!-- 用户列表区域 -->
    <el-table :data="userlist" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop = "username"></el-table-column>
        <el-table-column label="邮箱" prop = "email"></el-table-column>
        <el-table-column label="电话" prop = "mobile"></el-table-column>
        <el-table-column label="角色" prop = "role_name"></el-table-column>
        <el-table-column label="状态">
            <template slot-scope="scope">
                <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
            </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
            <template slot-scope="scope">
                <!-- 修改按钮 -->
                <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                <!-- 删除按钮 -->
                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                <!-- 分配角色按钮 -->
                <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                    <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                </el-tooltip>
                
            </template>
        </el-table-column>            
    </el-table>    

    <!-- 分页区域 -->
        <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
        </el-pagination>
    </el-card>

    <!-- 添加用户对话框区域 -->
    <el-dialog title="添加新用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
        <!-- 添加内容主体区 -->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
            <el-form-item label="用户名" prop="username">
                <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
                <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <!-- 底部区域 -->
        <span slot="footer" class="dialog-footer">           
            <el-button @click="addDialogVisible = false">取 消</el-button>           
            <el-button type="primary" @click="adduser">确 定</el-button>
        </span>
    </el-dialog>


<!-- 修改用户的对话框 -->
    <el-dialog title="修改信息" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
        <!-- 修改信息主体区域 -->
        <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">            
            <el-form-item label="用户名">
                <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="editForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <!-- 修该信息底部区域 -->
        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
    </el-dialog>

<!-- 分配角色对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogColsed">
        <div>
            <p>当前的用户:{{userInfo.username}}</p>
            <p>当前的角色:{{userInfo.role_name}}</p>
            <p>分配新角色:
                <el-select v-model="selectdRoleId" placeholder="请选择">
                    <el-option v-for="item in roleslist"
                    :key="item.id"
                    :label="item.roleName"
                    :value="item.id">
                    </el-option>
                </el-select>
            </p>
        </div>
        <span slot="footer" class="dialog-footer">
            <el-button @click="setRoleDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
    </el-dialog>

  </div>
</template>
<script>
export default {
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule,value,cb) => {
        // 验证邮箱正则表达式
        const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
        if (regEmail.test(value)) {
            // 合法的邮箱
            return cb()
        }
        cb(new Error('请输入合法的邮箱地址!'))
    }

    // 验证手机号码的规则
    var checkMobile = (rule,value,cb) => {
          // 验证手机号码正则表达式
         const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
         if (regMobile.test(value)) {
            // 合法的手机号码
            return cb()
        }
        cb(new Error('请输入合法的手机号码!'))
    }


    return {
        // 获取用户列表的参数对象
        queryInfo:{
            query:'',
            // 当前的页数
            pagenum:1,
            // 当前每页显示多少条数据
            pagesize:2
        },
        userlist:[],
        total:0,
        // 控制添加用户对话框的显示与隐藏
        addDialogVisible:false,
        // 添加用户的表单数据
        addForm:{
            username:'',
            password:'',
            email:'',
            mobile:''
        },
        // 添加表单验证规则对象
        addFormRules:{
            username :[
                {required : true,message:'请输入用户名',trigger:'blur'},
                {
                  min : 3,
                  max:10,
                  message:'请输入长度在3~10个字符之间的用户名',
                  trigger :'blur'
                }
            ],
            password:[
                {required : true,message:'请输入密码',trigger:'blur'},
                {
                  min : 6,
                  max : 15,
                  message : '请输入长度在6~15个字符之间的密码',
                  trigger : 'blur'
                }
            ],
            email: [
                {required : true,message:'请输入邮箱',trigger:'blur'},
                {validator:checkEmail,trigger:'blur'}
            ],
            mobile:[
                {required : true,message:'请输入手机号码',trigger:'blur'},
                {validator:checkMobile,trigger:'blur'}
            ]
        },
        // 控制修改用户对话框的显示与隐藏
        editDialogVisible: false,
        // 查询到的用户信息对象
        editForm:{},
        // 修改表单的验证规则对象
        editFormRules :{
            email: [
                {required : true,message:'请输入用户邮箱',trigger:'blur'},
                {validator:checkEmail,trigger:'blur'}
            ],
            mobile:[
                {required : true,message:'请输入手机号码',trigger:'blur'},
                {validator:checkMobile,trigger:'blur'}
            ]
        },
        // 控制分配角色对话框的显示与隐藏
        setRoleDialogVisible:false,
        // 需要被分配角色的用户信息
        userInfo:{},
        // 获取所有角色数据列表
        roleslist:[],
        // 已选中的角色id值
        selectdRoleId:''

    }   
  },

  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const {data : res} = await this.$http.get('users', { 
          params: this.queryInfo 
     })

     if(res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败！')
     }
     this.userlist = res.data.users
     this.total = res.data.total
    //   console.log(res);      
    },

    // 监听pagesize 改变的事件
    handleSizeChange(newSize){
        // console.log(newSize);
        this.queryInfo.pagesize=newSize;
        this.getUserList()        
    },
    // 监听页码值 改变的事件
    handleCurrentChange(newPage){
        // console.log(newPage);
        this.queryInfo.pagenum=newPage;
        this.getUserList()
        
    },
    // 监听swich 的显示状态
    async userStateChanged(userinfo){
        // console.log(userinfo);
        const {data:res}=await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
        if(res.meta.status !== 200) {
            userinfo.mg_state = ! userinfo.mg_state
            return this.$message.error('更新用户状态失败!')
        }
        this.$message.success('更新用户状态成功!')        
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed(){
        this.$refs.addFormRef.restFields()
    },
    //点击按钮 添加新用户
    adduser(){
        this.$refs.addFormRef.validate( async valid => {
            // console.log(valid);
            if(!valid) return
            // 可以发起添加用户的网络请求
            const {data:res} = await this.$http.post('users',this.addForm)

            if(res.meta.status !== 201) {
                this.$message.error('添加用户失败！')
            }
            this.$message.success('添加用户成功！')
            // 隐藏添加用户的对话框
            this.addDialogVisible = false
            // 重新获取用户列表数据
            this.getUserList()
            
        })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id){
        // console.log(id);   
       
        const {data:res} = await this.$http.get('users/' + id)
        if (res.meta.status !== 200 ){
            return this.$message.error('查询用户信息失败！')
        }

        this.editForm = res.data
        this.editDialogVisible = true                 
    },
    //监听编辑用户对话框的关闭事件
    editDialogClosed(){
        this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo(){
        this.$refs.editFormRef.validate( async valid => {
            if(!valid) return
            // 发起修改用户信息的数据请求
             const {data:res} = await this.$http.put('users/' + this.editForm.id,{
                 email: this.editForm.email,
                 mobile: this.editForm.mobile
             })

            if (res.meta.status !== 200 ){
                return this.$message.error('更新用户信息失败！')
            }

            // 隐藏添加用户的对话框
            this.editDialogVisible = false
            // 刷新数据列表
            this.getUserList()
            // 提示修改成功
            this.$message.success('更新用户信息成功！')
        })
    },
    // 根据id 删除对应的用户信息
    async removeUserById(id){
         const confrimResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'

        }).catch(err => err) //catch 捕获用户取消行为

        // 确认删除 返回字符串 confirm
        // 取消删除 返回字符串cancle
        // console.log(confrimResult);
        if(confrimResult !== 'confirm') {
            return this.$message.info('取消删除')
        }

        const {data:res} = await this.$http.delete('users/' +  id)
        if(res.meta.status !== 200) {
            return this.$message.erroe('删除用户失败！')
        }
        this.$message.success('删除用户成功！')
        this.getUserList()
        // return this.$message.info('成功删除该用户')
        
    },
    // 展示分配角色对话框
    async setRole(userInfo){
        this.userInfo = userInfo
        
        // 在展示对话框之前,获取所有角色列表
        const {data:res} = await this.$http.get('roles')

        if(res.meta.status !== 200) {
            return this.$message.error('获取角色列表失败!')
        }

        this.roleslist = res.data

        this.setRoleDialogVisible = true
    },
    // 点击确定按钮,分配角色
    async saveRoleInfo(){
        if(!this.selectdRoleId){
            return this.$message.error('请选择要分配的角色!')
        }

       const{data : res} = await this.$http.put(`users/${this.userInfo.id}/role`,{
            rid: this.selectdRoleId
        })
        if(res.meta.status !==200) {
            return this.$message.error('更新角色失败!')
        }
        this.$message.success('更新角色成功!')
        this.getUserList()
        this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框关闭事件
    setRoleDialogColsed(){
        this.selectdRoleId=''
        this.userInfo={}
    }

  }   
}
</script>

<style lang="less" scoped>
</style>